Let U = {a, b, c, d, e, f, g, h, i, j, k}, A = {b, c, d, f, g, i}, B = {c, d, f, i, k}, C = {a, b, d, g, k}. %3D Determine U (Cn B)'. Select the correct choice and, if necessary, fill in the answer box to complete your choice. O A. AU (CnB)'= { } (Use a comma to separate answers as needed.) O A. AU (CN B) O B. AU (C n B)' is the empty set.

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